drivers/scsi/be2iscsi/be_iscsi.c

   1 /**
   2  * Copyright (C) 2005 - 2013 Emulex
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
  11  *
  12  * Contact Information:
  13  * linux-drivers@emulex.com
  14  *
  15  * Emulex
  16  * 3333 Susan Street
  17  * Costa Mesa, CA 92626
  18  */
  19
  20 #include <scsi/libiscsi.h>
  21 #include <scsi/scsi_transport_iscsi.h>
  22 #include <scsi/scsi_transport.h>
  23 #include <scsi/scsi_cmnd.h>
  24 #include <scsi/scsi_device.h>
  25 #include <scsi/scsi_host.h>
  26 #include <scsi/scsi_netlink.h>
  27 #include <net/netlink.h>
  28 #include <scsi/scsi.h>
  29
  30 #include "be_iscsi.h"
  31
  32 extern struct iscsi_transport beiscsi_iscsi_transport;
  33
  34 /**
  35  * beiscsi_session_create - creates a new iscsi session
  36  * @cmds_max: max commands supported
  37  * @qdepth: max queue depth supported
  38  * @initial_cmdsn: initial iscsi CMDSN
  39  */
  40 struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
  41                                                  u16 cmds_max,
  42                                                  u16 qdepth,
  43                                                  u32 initial_cmdsn)
  44 {
  45         struct Scsi_Host *shost;
  46         struct beiscsi_endpoint *beiscsi_ep;
  47         struct iscsi_cls_session *cls_session;
  48         struct beiscsi_hba *phba;
  49         struct iscsi_session *sess;
  50         struct beiscsi_session *beiscsi_sess;
  51         struct beiscsi_io_task *io_task;
  52
  53
  54         if (!ep) {
  55                 printk(KERN_ERR
  56                        "beiscsi_session_create: invalid ep\n");
  57                 return NULL;
  58         }
  59         beiscsi_ep = ep->dd_data;
  60         phba = beiscsi_ep->phba;
  61
  62         if (phba->state & BE_ADAPTER_PCI_ERR) {
  63                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
  64                             "BS_%d : PCI_ERROR Recovery\n");
  65                 return NULL;
  66         } else {
  67                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
  68                             "BS_%d : In beiscsi_session_create\n");
  69         }
  70
  71         if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
  72                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
  73                             "BS_%d : Cannot handle %d cmds."
  74                             "Max cmds per session supported is %d. Using %d."
  75                             "\n", cmds_max,
  76                             beiscsi_ep->phba->params.wrbs_per_cxn,
  77                             beiscsi_ep->phba->params.wrbs_per_cxn);
  78
  79                 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
  80         }
  81
  82         shost = phba->shost;
  83         cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
  84                                           shost, cmds_max,
  85                                           sizeof(*beiscsi_sess),
  86                                           sizeof(*io_task),
  87                                           initial_cmdsn, ISCSI_MAX_TARGET);
  88         if (!cls_session)
  89                 return NULL;
  90         sess = cls_session->dd_data;
  91         beiscsi_sess = sess->dd_data;
  92         beiscsi_sess->bhs_pool =  pci_pool_create("beiscsi_bhs_pool",
  93                                                    phba->pcidev,
  94                                                    sizeof(struct be_cmd_bhs),
  95                                                    64, 0);
  96         if (!beiscsi_sess->bhs_pool)
  97                 goto destroy_sess;
  98
  99         return cls_session;
 100 destroy_sess:
 101         iscsi_session_teardown(cls_session);
 102         return NULL;
 103 }
 104
 105 /**
 106  * beiscsi_session_destroy - destroys iscsi session
 107  * @cls_session:        pointer to iscsi cls session
 108  *
 109  * Destroys iSCSI session instance and releases
 110  * resources allocated for it.
 111  */
 112 void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
 113 {
 114         struct iscsi_session *sess = cls_session->dd_data;
 115         struct beiscsi_session *beiscsi_sess = sess->dd_data;
 116
 117         printk(KERN_INFO "In beiscsi_session_destroy\n");
 118         pci_pool_destroy(beiscsi_sess->bhs_pool);
 119         iscsi_session_teardown(cls_session);
 120 }
 121
 122 /**
 123  * beiscsi_conn_create - create an instance of iscsi connection
 124  * @cls_session: ptr to iscsi_cls_session
 125  * @cid: iscsi cid
 126  */
 127 struct iscsi_cls_conn *
 128 beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
 129 {
 130         struct beiscsi_hba *phba;
 131         struct Scsi_Host *shost;
 132         struct iscsi_cls_conn *cls_conn;
 133         struct beiscsi_conn *beiscsi_conn;
 134         struct iscsi_conn *conn;
 135         struct iscsi_session *sess;
 136         struct beiscsi_session *beiscsi_sess;
 137
 138         shost = iscsi_session_to_shost(cls_session);
 139         phba = iscsi_host_priv(shost);
 140
 141         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 142                     "BS_%d : In beiscsi_conn_create ,cid"
 143                     "from iscsi layer=%d\n", cid);
 144
 145         cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
 146         if (!cls_conn)
 147                 return NULL;
 148
 149         conn = cls_conn->dd_data;
 150         beiscsi_conn = conn->dd_data;
 151         beiscsi_conn->ep = NULL;
 152         beiscsi_conn->phba = phba;
 153         beiscsi_conn->conn = conn;
 154         sess = cls_session->dd_data;
 155         beiscsi_sess = sess->dd_data;
 156         beiscsi_conn->beiscsi_sess = beiscsi_sess;
 157         return cls_conn;
 158 }
 159
 160 /**
 161  * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
 162  * @beiscsi_conn: The pointer to  beiscsi_conn structure
 163  * @phba: The phba instance
 164  * @cid: The cid to free
 165  */
 166 static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
 167                                 struct beiscsi_conn *beiscsi_conn,
 168                                 unsigned int cid)
 169 {
 170         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
 171
 172         if (phba->conn_table[cri_index]) {
 173                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 174                             "BS_%d : Connection table already occupied. Detected clash\n");
 175
 176                 return -EINVAL;
 177         } else {
 178                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 179                             "BS_%d : phba->conn_table[%d]=%p(beiscsi_conn)\n",
 180                             cri_index, beiscsi_conn);
 181
 182                 phba->conn_table[cri_index] = beiscsi_conn;
 183         }
 184         return 0;
 185 }
 186
 187 /**
 188  * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
 189  * @cls_session: pointer to iscsi cls session
 190  * @cls_conn: pointer to iscsi cls conn
 191  * @transport_fd: EP handle(64 bit)
 192  *
 193  * This function binds the TCP Conn with iSCSI Connection and Session.
 194  */
 195 int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
 196                       struct iscsi_cls_conn *cls_conn,
 197                       u64 transport_fd, int is_leading)
 198 {
 199         struct iscsi_conn *conn = cls_conn->dd_data;
 200         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 201         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 202         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 203         struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
 204         struct hwi_wrb_context *pwrb_context;
 205         struct beiscsi_endpoint *beiscsi_ep;
 206         struct iscsi_endpoint *ep;
 207
 208         ep = iscsi_lookup_endpoint(transport_fd);
 209         if (!ep)
 210                 return -EINVAL;
 211
 212         beiscsi_ep = ep->dd_data;
 213
 214         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
 215                 return -EINVAL;
 216
 217         if (beiscsi_ep->phba != phba) {
 218                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 219                             "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
 220                             beiscsi_ep->phba, phba);
 221
 222                 return -EEXIST;
 223         }
 224
 225         pwrb_context = &phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID(
 226                                                 beiscsi_ep->ep_cid)];
 227
 228         beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
 229         beiscsi_conn->ep = beiscsi_ep;
 230         beiscsi_ep->conn = beiscsi_conn;
 231         beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
 232
 233         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 234                     "BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n",
 235                     beiscsi_conn, conn, beiscsi_ep->ep_cid);
 236
 237         return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
 238 }
 239
 240 static int beiscsi_create_ipv4_iface(struct beiscsi_hba *phba)
 241 {
 242         if (phba->ipv4_iface)
 243                 return 0;
 244
 245         phba->ipv4_iface = iscsi_create_iface(phba->shost,
 246                                               &beiscsi_iscsi_transport,
 247                                               ISCSI_IFACE_TYPE_IPV4,
 248                                               0, 0);
 249         if (!phba->ipv4_iface) {
 250                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 251                             "BS_%d : Could not "
 252                             "create default IPv4 address.\n");
 253                 return -ENODEV;
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int beiscsi_create_ipv6_iface(struct beiscsi_hba *phba)
 260 {
 261         if (phba->ipv6_iface)
 262                 return 0;
 263
 264         phba->ipv6_iface = iscsi_create_iface(phba->shost,
 265                                               &beiscsi_iscsi_transport,
 266                                               ISCSI_IFACE_TYPE_IPV6,
 267                                               0, 0);
 268         if (!phba->ipv6_iface) {
 269                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 270                             "BS_%d : Could not "
 271                             "create default IPv6 address.\n");
 272                 return -ENODEV;
 273         }
 274
 275         return 0;
 276 }
 277
 278 void beiscsi_create_def_ifaces(struct beiscsi_hba *phba)
 279 {
 280         struct be_cmd_get_if_info_resp *if_info;
 281
 282         if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info)) {
 283                 beiscsi_create_ipv4_iface(phba);
 284                 kfree(if_info);
 285         }
 286
 287         if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info)) {
 288                 beiscsi_create_ipv6_iface(phba);
 289                 kfree(if_info);
 290         }
 291 }
 292
 293 void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba)
 294 {
 295         if (phba->ipv6_iface)
 296                 iscsi_destroy_iface(phba->ipv6_iface);
 297         if (phba->ipv4_iface)
 298                 iscsi_destroy_iface(phba->ipv4_iface);
 299 }
 300
 301 static int
 302 beiscsi_set_static_ip(struct Scsi_Host *shost,
 303                 struct iscsi_iface_param_info *iface_param,
 304                 void *data, uint32_t dt_len)
 305 {
 306         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 307         struct iscsi_iface_param_info *iface_ip = NULL;
 308         struct iscsi_iface_param_info *iface_subnet = NULL;
 309         struct nlattr *nla;
 310         int ret;
 311
 312
 313         switch (iface_param->param) {
 314         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 315                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 316                 if (nla)
 317                         iface_ip = nla_data(nla);
 318
 319                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 320                 if (nla)
 321                         iface_subnet = nla_data(nla);
 322                 break;
 323         case ISCSI_NET_PARAM_IPV4_ADDR:
 324                 iface_ip = iface_param;
 325                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 326                 if (nla)
 327                         iface_subnet = nla_data(nla);
 328                 break;
 329         case ISCSI_NET_PARAM_IPV4_SUBNET:
 330                 iface_subnet = iface_param;
 331                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 332                 if (nla)
 333                         iface_ip = nla_data(nla);
 334                 break;
 335         default:
 336                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 337                             "BS_%d : Unsupported param %d\n",
 338                             iface_param->param);
 339         }
 340
 341         if (!iface_ip || !iface_subnet) {
 342                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 343                             "BS_%d : IP and Subnet Mask required\n");
 344                 return -EINVAL;
 345         }
 346
 347         ret = mgmt_set_ip(phba, iface_ip, iface_subnet,
 348                         ISCSI_BOOTPROTO_STATIC);
 349
 350         return ret;
 351 }
 352
 353 /**
 354  * beiscsi_set_vlan_tag()- Set the VLAN TAG
 355  * @shost: Scsi Host for the driver instance
 356  * @iface_param: Interface paramters
 357  *
 358  * Set the VLAN TAG for the adapter or disable
 359  * the VLAN config
 360  *
 361  * returns
 362  *      Success: 0
 363  *      Failure: Non-Zero Value
 364  **/
 365 static int
 366 beiscsi_set_vlan_tag(struct Scsi_Host *shost,
 367                       struct iscsi_iface_param_info *iface_param)
 368 {
 369         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 370         int ret = 0;
 371
 372         /* Get the Interface Handle */
 373         if (mgmt_get_all_if_id(phba)) {
 374                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 375                             "BS_%d : Getting Interface Handle Failed\n");
 376                 return -EIO;
 377         }
 378
 379         switch (iface_param->param) {
 380         case ISCSI_NET_PARAM_VLAN_ENABLED:
 381                 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
 382                         ret = mgmt_set_vlan(phba, BEISCSI_VLAN_DISABLE);
 383                 break;
 384         case ISCSI_NET_PARAM_VLAN_TAG:
 385                 ret = mgmt_set_vlan(phba,
 386                                     *((uint16_t *)iface_param->value));
 387                 break;
 388         default:
 389                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
 390                             "BS_%d : Unknown Param Type : %d\n",
 391                             iface_param->param);
 392                 return -ENOSYS;
 393         }
 394         return ret;
 395 }
 396
 397
 398 static int
 399 beiscsi_set_ipv4(struct Scsi_Host *shost,
 400                 struct iscsi_iface_param_info *iface_param,
 401                 void *data, uint32_t dt_len)
 402 {
 403         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 404         int ret = 0;
 405
 406         /* Check the param */
 407         switch (iface_param->param) {
 408         case ISCSI_NET_PARAM_IPV4_GW:
 409                 ret = mgmt_set_gateway(phba, iface_param);
 410                 break;
 411         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 412                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
 413                         ret = mgmt_set_ip(phba, iface_param,
 414                                         NULL, ISCSI_BOOTPROTO_DHCP);
 415                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
 416                         ret = beiscsi_set_static_ip(shost, iface_param,
 417                                                     data, dt_len);
 418                 else
 419                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 420                                     "BS_%d : Invalid BOOTPROTO: %d\n",
 421                                     iface_param->value[0]);
 422                 break;
 423         case ISCSI_NET_PARAM_IFACE_ENABLE:
 424                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 425                         ret = beiscsi_create_ipv4_iface(phba);
 426                 else
 427                         iscsi_destroy_iface(phba->ipv4_iface);
 428                 break;
 429         case ISCSI_NET_PARAM_IPV4_SUBNET:
 430         case ISCSI_NET_PARAM_IPV4_ADDR:
 431                 ret = beiscsi_set_static_ip(shost, iface_param,
 432                                             data, dt_len);
 433                 break;
 434         case ISCSI_NET_PARAM_VLAN_ENABLED:
 435         case ISCSI_NET_PARAM_VLAN_TAG:
 436                 ret = beiscsi_set_vlan_tag(shost, iface_param);
 437                 break;
 438         default:
 439                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 440                             "BS_%d : Param %d not supported\n",
 441                             iface_param->param);
 442         }
 443
 444         return ret;
 445 }
 446
 447 static int
 448 beiscsi_set_ipv6(struct Scsi_Host *shost,
 449                 struct iscsi_iface_param_info *iface_param,
 450                 void *data, uint32_t dt_len)
 451 {
 452         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 453         int ret = 0;
 454
 455         switch (iface_param->param) {
 456         case ISCSI_NET_PARAM_IFACE_ENABLE:
 457                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 458                         ret = beiscsi_create_ipv6_iface(phba);
 459                 else {
 460                         iscsi_destroy_iface(phba->ipv6_iface);
 461                         ret = 0;
 462                 }
 463                 break;
 464         case ISCSI_NET_PARAM_IPV6_ADDR:
 465                 ret = mgmt_set_ip(phba, iface_param, NULL,
 466                                   ISCSI_BOOTPROTO_STATIC);
 467                 break;
 468         default:
 469                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 470                             "BS_%d : Param %d not supported\n",
 471                             iface_param->param);
 472         }
 473
 474         return ret;
 475 }
 476
 477 int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 478                 void *data, uint32_t dt_len)
 479 {
 480         struct iscsi_iface_param_info *iface_param = NULL;
 481         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 482         struct nlattr *attrib;
 483         uint32_t rm_len = dt_len;
 484         int ret = 0 ;
 485
 486         if (phba->state & BE_ADAPTER_PCI_ERR) {
 487                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 488                             "BS_%d : In PCI_ERROR Recovery\n");
 489                 return -EBUSY;
 490         }
 491
 492         nla_for_each_attr(attrib, data, dt_len, rm_len) {
 493                 iface_param = nla_data(attrib);
 494
 495                 if (iface_param->param_type != ISCSI_NET_PARAM)
 496                         continue;
 497
 498                 /*
 499                  * BE2ISCSI only supports 1 interface
 500                  */
 501                 if (iface_param->iface_num) {
 502                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 503                                     "BS_%d : Invalid iface_num %d."
 504                                     "Only iface_num 0 is supported.\n",
 505                                     iface_param->iface_num);
 506
 507                         return -EINVAL;
 508                 }
 509
 510                 switch (iface_param->iface_type) {
 511                 case ISCSI_IFACE_TYPE_IPV4:
 512                         ret = beiscsi_set_ipv4(shost, iface_param,
 513                                                data, dt_len);
 514                         break;
 515                 case ISCSI_IFACE_TYPE_IPV6:
 516                         ret = beiscsi_set_ipv6(shost, iface_param,
 517                                                data, dt_len);
 518                         break;
 519                 default:
 520                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 521                                     "BS_%d : Invalid iface type :%d passed\n",
 522                                     iface_param->iface_type);
 523                         break;
 524                 }
 525
 526                 if (ret)
 527                         return ret;
 528         }
 529
 530         return ret;
 531 }
 532
 533 static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
 534                 struct iscsi_iface *iface, int param,
 535                 char *buf)
 536 {
 537         struct be_cmd_get_if_info_resp *if_info;
 538         int len, ip_type = BE2_IPV4;
 539
 540         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 541                 ip_type = BE2_IPV6;
 542
 543         len = mgmt_get_if_info(phba, ip_type, &if_info);
 544         if (len) {
 545                 kfree(if_info);
 546                 return len;
 547         }
 548
 549         switch (param) {
 550         case ISCSI_NET_PARAM_IPV4_ADDR:
 551                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
 552                 break;
 553         case ISCSI_NET_PARAM_IPV6_ADDR:
 554                 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
 555                 break;
 556         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 557                 if (!if_info->dhcp_state)
 558                         len = sprintf(buf, "static\n");
 559                 else
 560                         len = sprintf(buf, "dhcp\n");
 561                 break;
 562         case ISCSI_NET_PARAM_IPV4_SUBNET:
 563                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
 564                 break;
 565         case ISCSI_NET_PARAM_VLAN_ENABLED:
 566                 len = sprintf(buf, "%s\n",
 567                              (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 568                              ? "Disabled\n" : "Enabled\n");
 569                 break;
 570         case ISCSI_NET_PARAM_VLAN_ID:
 571                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 572                         return -EINVAL;
 573                 else
 574                         len = sprintf(buf, "%d\n",
 575                                      (if_info->vlan_priority &
 576                                      ISCSI_MAX_VLAN_ID));
 577                 break;
 578         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 579                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 580                         return -EINVAL;
 581                 else
 582                         len = sprintf(buf, "%d\n",
 583                                      ((if_info->vlan_priority >> 13) &
 584                                      ISCSI_MAX_VLAN_PRIORITY));
 585                 break;
 586         default:
 587                 WARN_ON(1);
 588         }
 589
 590         kfree(if_info);
 591         return len;
 592 }
 593
 594 int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 595                 enum iscsi_param_type param_type,
 596                 int param, char *buf)
 597 {
 598         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 599         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 600         struct be_cmd_get_def_gateway_resp gateway;
 601         int len = -ENOSYS;
 602
 603         if (phba->state & BE_ADAPTER_PCI_ERR) {
 604                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 605                             "BS_%d : In PCI_ERROR Recovery\n");
 606                 return -EBUSY;
 607         }
 608
 609         switch (param) {
 610         case ISCSI_NET_PARAM_IPV4_ADDR:
 611         case ISCSI_NET_PARAM_IPV4_SUBNET:
 612         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 613         case ISCSI_NET_PARAM_IPV6_ADDR:
 614         case ISCSI_NET_PARAM_VLAN_ENABLED:
 615         case ISCSI_NET_PARAM_VLAN_ID:
 616         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 617                 len = be2iscsi_get_if_param(phba, iface, param, buf);
 618                 break;
 619         case ISCSI_NET_PARAM_IFACE_ENABLE:
 620                 len = sprintf(buf, "enabled\n");
 621                 break;
 622         case ISCSI_NET_PARAM_IPV4_GW:
 623                 memset(&gateway, 0, sizeof(gateway));
 624                 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
 625                 if (!len)
 626                         len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 627                 break;
 628         default:
 629                 len = -ENOSYS;
 630         }
 631
 632         return len;
 633 }
 634
 635 /**
 636  * beiscsi_ep_get_param - get the iscsi parameter
 637  * @ep: pointer to iscsi ep
 638  * @param: parameter type identifier
 639  * @buf: buffer pointer
 640  *
 641  * returns iscsi parameter
 642  */
 643 int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 644                            enum iscsi_param param, char *buf)
 645 {
 646         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
 647         int len = 0;
 648
 649         beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 650                     BEISCSI_LOG_CONFIG,
 651                     "BS_%d : In beiscsi_ep_get_param,"
 652                     " param= %d\n", param);
 653
 654         switch (param) {
 655         case ISCSI_PARAM_CONN_PORT:
 656                 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
 657                 break;
 658         case ISCSI_PARAM_CONN_ADDRESS:
 659                 if (beiscsi_ep->ip_type == BE2_IPV4)
 660                         len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
 661                 else
 662                         len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 663                 break;
 664         default:
 665                 return -ENOSYS;
 666         }
 667         return len;
 668 }
 669
 670 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 671                       enum iscsi_param param, char *buf, int buflen)
 672 {
 673         struct iscsi_conn *conn = cls_conn->dd_data;
 674         struct iscsi_session *session = conn->session;
 675         struct beiscsi_hba *phba = NULL;
 676         int ret;
 677
 678         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 679         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 680                     "BS_%d : In beiscsi_conn_set_param,"
 681                     " param= %d\n", param);
 682
 683         ret = iscsi_set_param(cls_conn, param, buf, buflen);
 684         if (ret)
 685                 return ret;
 686         /*
 687          * If userspace tried to set the value to higher than we can
 688          * support override here.
 689          */
 690         switch (param) {
 691         case ISCSI_PARAM_FIRST_BURST:
 692                 if (session->first_burst > 8192)
 693                         session->first_burst = 8192;
 694                 break;
 695         case ISCSI_PARAM_MAX_RECV_DLENGTH:
 696                 if (conn->max_recv_dlength > 65536)
 697                         conn->max_recv_dlength = 65536;
 698                 break;
 699         case ISCSI_PARAM_MAX_BURST:
 700                 if (session->max_burst > 262144)
 701                         session->max_burst = 262144;
 702                 break;
 703         case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 704                 if (conn->max_xmit_dlength > 65536)
 705                         conn->max_xmit_dlength = 65536;
 706         default:
 707                 return 0;
 708         }
 709
 710         return 0;
 711 }
 712
 713 /**
 714  * beiscsi_get_initname - Read Initiator Name from flash
 715  * @buf: buffer bointer
 716  * @phba: The device priv structure instance
 717  *
 718  * returns number of bytes
 719  */
 720 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 721 {
 722         int rc;
 723         unsigned int tag;
 724         struct be_mcc_wrb *wrb;
 725         struct be_cmd_hba_name *resp;
 726
 727         tag = be_cmd_get_initname(phba);
 728         if (!tag) {
 729                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 730                             "BS_%d : Getting Initiator Name Failed\n");
 731
 732                 return -EBUSY;
 733         }
 734
 735         rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
 736         if (rc) {
 737                 beiscsi_log(phba, KERN_ERR,
 738                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 739                             "BS_%d : Initiator Name MBX Failed\n");
 740                 return rc;
 741         }
 742
 743         resp = embedded_payload(wrb);
 744         rc = sprintf(buf, "%s\n", resp->initiator_name);
 745         return rc;
 746 }
 747
 748 /**
 749  * beiscsi_get_port_state - Get the Port State
 750  * @shost : pointer to scsi_host structure
 751  *
 752  */
 753 static void beiscsi_get_port_state(struct Scsi_Host *shost)
 754 {
 755         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 756         struct iscsi_cls_host *ihost = shost->shost_data;
 757
 758         ihost->port_state = (phba->state == BE_ADAPTER_LINK_UP) ?
 759                 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
 760 }
 761
 762 /**
 763  * beiscsi_get_port_speed  - Get the Port Speed from Adapter
 764  * @shost : pointer to scsi_host structure
 765  *
 766  * returns Success/Failure
 767  */
 768 static int beiscsi_get_port_speed(struct Scsi_Host *shost)
 769 {
 770         int rc;
 771         unsigned int tag;
 772         struct be_mcc_wrb *wrb;
 773         struct be_cmd_ntwk_link_status_resp *resp;
 774         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 775         struct iscsi_cls_host *ihost = shost->shost_data;
 776
 777         tag = be_cmd_get_port_speed(phba);
 778         if (!tag) {
 779                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 780                             "BS_%d : Getting Port Speed Failed\n");
 781
 782                  return -EBUSY;
 783         }
 784         rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
 785         if (rc) {
 786                 beiscsi_log(phba, KERN_ERR,
 787                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 788                             "BS_%d : Port Speed MBX Failed\n");
 789                 return rc;
 790         }
 791         resp = embedded_payload(wrb);
 792
 793         switch (resp->mac_speed) {
 794         case BE2ISCSI_LINK_SPEED_10MBPS:
 795                 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
 796                 break;
 797         case BE2ISCSI_LINK_SPEED_100MBPS:
 798                 ihost->port_speed = BE2ISCSI_LINK_SPEED_100MBPS;
 799                 break;
 800         case BE2ISCSI_LINK_SPEED_1GBPS:
 801                 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
 802                 break;
 803         case BE2ISCSI_LINK_SPEED_10GBPS:
 804                 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
 805                 break;
 806         default:
 807                 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
 808         }
 809         return 0;
 810 }
 811
 812 /**
 813  * beiscsi_get_host_param - get the iscsi parameter
 814  * @shost: pointer to scsi_host structure
 815  * @param: parameter type identifier
 816  * @buf: buffer pointer
 817  *
 818  * returns host parameter
 819  */
 820 int beiscsi_get_host_param(struct Scsi_Host *shost,
 821                            enum iscsi_host_param param, char *buf)
 822 {
 823         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 824         int status = 0;
 825
 826
 827         if (phba->state & BE_ADAPTER_PCI_ERR) {
 828                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 829                             "BS_%d : In PCI_ERROR Recovery\n");
 830                 return -EBUSY;
 831         } else {
 832                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 833                             "BS_%d : In beiscsi_get_host_param,"
 834                             " param = %d\n", param);
 835         }
 836
 837         switch (param) {
 838         case ISCSI_HOST_PARAM_HWADDRESS:
 839                 status = beiscsi_get_macaddr(buf, phba);
 840                 if (status < 0) {
 841                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 842                                     "BS_%d : beiscsi_get_macaddr Failed\n");
 843                         return status;
 844                 }
 845                 break;
 846         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 847                 status = beiscsi_get_initname(buf, phba);
 848                 if (status < 0) {
 849                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 850                                     "BS_%d : Retreiving Initiator Name Failed\n");
 851                         return status;
 852                 }
 853                 break;
 854         case ISCSI_HOST_PARAM_PORT_STATE:
 855                 beiscsi_get_port_state(shost);
 856                 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 857                 break;
 858         case ISCSI_HOST_PARAM_PORT_SPEED:
 859                 status = beiscsi_get_port_speed(shost);
 860                 if (status) {
 861                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 862                                     "BS_%d : Retreiving Port Speed Failed\n");
 863                         return status;
 864                 }
 865                 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 866                 break;
 867         default:
 868                 return iscsi_host_get_param(shost, param, buf);
 869         }
 870         return status;
 871 }
 872
 873 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
 874 {
 875         struct be_cmd_get_nic_conf_resp resp;
 876         int rc;
 877
 878         if (phba->mac_addr_set)
 879                 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 880
 881         memset(&resp, 0, sizeof(resp));
 882         rc = mgmt_get_nic_conf(phba, &resp);
 883         if (rc)
 884                 return rc;
 885
 886         phba->mac_addr_set = true;
 887         memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 888         return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 889 }
 890
 891 /**
 892  * beiscsi_conn_get_stats - get the iscsi stats
 893  * @cls_conn: pointer to iscsi cls conn
 894  * @stats: pointer to iscsi_stats structure
 895  *
 896  * returns iscsi stats
 897  */
 898 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 899                             struct iscsi_stats *stats)
 900 {
 901         struct iscsi_conn *conn = cls_conn->dd_data;
 902         struct beiscsi_hba *phba = NULL;
 903
 904         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 905         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 906                     "BS_%d : In beiscsi_conn_get_stats\n");
 907
 908         stats->txdata_octets = conn->txdata_octets;
 909         stats->rxdata_octets = conn->rxdata_octets;
 910         stats->dataout_pdus = conn->dataout_pdus_cnt;
 911         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 912         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 913         stats->datain_pdus = conn->datain_pdus_cnt;
 914         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 915         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 916         stats->r2t_pdus = conn->r2t_pdus_cnt;
 917         stats->digest_err = 0;
 918         stats->timeout_err = 0;
 919         stats->custom_length = 0;
 920         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 921         stats->custom[0].value = conn->eh_abort_cnt;
 922 }
 923
 924 /**
 925  * beiscsi_set_params_for_offld - get the parameters for offload
 926  * @beiscsi_conn: pointer to beiscsi_conn
 927  * @params: pointer to offload_params structure
 928  */
 929 static void  beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
 930                                           struct beiscsi_offload_params *params)
 931 {
 932         struct iscsi_conn *conn = beiscsi_conn->conn;
 933         struct iscsi_session *session = conn->session;
 934
 935         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
 936                       params, session->max_burst);
 937         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 938                       max_send_data_segment_length, params,
 939                       conn->max_xmit_dlength);
 940         AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
 941                       params, session->first_burst);
 942         AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
 943                       session->erl);
 944         AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
 945                       conn->datadgst_en);
 946         AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
 947                       conn->hdrdgst_en);
 948         AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
 949                       session->initial_r2t_en);
 950         AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
 951                       session->imm_data_en);
 952         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 953                       data_seq_inorder, params,
 954                       session->dataseq_inorder_en);
 955         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 956                       pdu_seq_inorder, params,
 957                       session->pdu_inorder_en);
 958         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
 959                       session->max_r2t);
 960         AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
 961                       (conn->exp_statsn - 1));
 962         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 963                       max_recv_data_segment_length, params,
 964                       conn->max_recv_dlength);
 965
 966 }
 967
 968 /**
 969  * beiscsi_conn_start - offload of session to chip
 970  * @cls_conn: pointer to beiscsi_conn
 971  */
 972 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
 973 {
 974         struct iscsi_conn *conn = cls_conn->dd_data;
 975         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 976         struct beiscsi_endpoint *beiscsi_ep;
 977         struct beiscsi_offload_params params;
 978         struct beiscsi_hba *phba;
 979
 980         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 981
 982         if (phba->state & BE_ADAPTER_PCI_ERR) {
 983                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 984                             "BS_%d : In PCI_ERROR Recovery\n");
 985                 return -EBUSY;
 986         } else {
 987                 beiscsi_log(beiscsi_conn->phba, KERN_INFO,
 988                             BEISCSI_LOG_CONFIG,
 989                             "BS_%d : In beiscsi_conn_start\n");
 990         }
 991
 992         memset(&params, 0, sizeof(struct beiscsi_offload_params));
 993         beiscsi_ep = beiscsi_conn->ep;
 994         if (!beiscsi_ep)
 995                 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
 996                             BEISCSI_LOG_CONFIG,
 997                             "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
 998
 999         beiscsi_conn->login_in_progress = 0;
1000         beiscsi_set_params_for_offld(beiscsi_conn, &params);
1001         beiscsi_offload_connection(beiscsi_conn, &params);
1002         iscsi_conn_start(cls_conn);
1003         return 0;
1004 }
1005
1006 /**
1007  * beiscsi_get_cid - Allocate a cid
1008  * @phba: The phba instance
1009  */
1010 static int beiscsi_get_cid(struct beiscsi_hba *phba)
1011 {
1012         unsigned short cid = 0xFFFF, cid_from_ulp;
1013         struct ulp_cid_info *cid_info = NULL;
1014         uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
1015
1016         /* Find the ULP which has more CID available */
1017         cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
1018                           BEISCSI_ULP0_AVLBL_CID(phba) : 0;
1019         cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
1020                           BEISCSI_ULP1_AVLBL_CID(phba) : 0;
1021         cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
1022                         BEISCSI_ULP0 : BEISCSI_ULP1;
1023
1024         if (test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) {
1025                 cid_info = phba->cid_array_info[cid_from_ulp];
1026                 if (!cid_info->avlbl_cids)
1027                         return cid;
1028
1029                 cid = cid_info->cid_array[cid_info->cid_alloc++];
1030
1031                 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(
1032                                            phba, cid_from_ulp))
1033                         cid_info->cid_alloc = 0;
1034
1035                 cid_info->avlbl_cids--;
1036         }
1037         return cid;
1038 }
1039
1040 /**
1041  * beiscsi_put_cid - Free the cid
1042  * @phba: The phba for which the cid is being freed
1043  * @cid: The cid to free
1044  */
1045 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
1046 {
1047         uint16_t cid_post_ulp;
1048         struct hwi_controller *phwi_ctrlr;
1049         struct hwi_wrb_context *pwrb_context;
1050         struct ulp_cid_info *cid_info = NULL;
1051         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1052
1053         phwi_ctrlr = phba->phwi_ctrlr;
1054         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1055         cid_post_ulp = pwrb_context->ulp_num;
1056
1057         cid_info = phba->cid_array_info[cid_post_ulp];
1058         cid_info->avlbl_cids++;
1059
1060         cid_info->cid_array[cid_info->cid_free++] = cid;
1061         if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
1062                 cid_info->cid_free = 0;
1063 }
1064
1065 /**
1066  * beiscsi_free_ep - free endpoint
1067  * @ep: pointer to iscsi endpoint structure
1068  */
1069 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1070 {
1071         struct beiscsi_hba *phba = beiscsi_ep->phba;
1072         struct beiscsi_conn *beiscsi_conn;
1073
1074         beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1075         beiscsi_ep->phba = NULL;
1076         phba->ep_array[BE_GET_CRI_FROM_CID
1077                        (beiscsi_ep->ep_cid)] = NULL;
1078
1079         /**
1080          * Check if any connection resource allocated by driver
1081          * is to be freed.This case occurs when target redirection
1082          * or connection retry is done.
1083          **/
1084         if (!beiscsi_ep->conn)
1085                 return;
1086
1087         beiscsi_conn = beiscsi_ep->conn;
1088         if (beiscsi_conn->login_in_progress) {
1089                 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1090                                                beiscsi_conn->task);
1091                 beiscsi_conn->login_in_progress = 0;
1092         }
1093 }
1094
1095 /**
1096  * beiscsi_open_conn - Ask FW to open a TCP connection
1097  * @ep: endpoint to be used
1098  * @src_addr: The source IP address
1099  * @dst_addr: The Destination  IP address
1100  *
1101  * Asks the FW to open a TCP connection
1102  */
1103 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1104                              struct sockaddr *src_addr,
1105                              struct sockaddr *dst_addr, int non_blocking)
1106 {
1107         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1108         struct beiscsi_hba *phba = beiscsi_ep->phba;
1109         struct tcp_connect_and_offload_out *ptcpcnct_out;
1110         struct be_dma_mem nonemb_cmd;
1111         unsigned int tag;
1112         int ret = -ENOMEM;
1113
1114         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1115                     "BS_%d : In beiscsi_open_conn\n");
1116
1117         beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1118         if (beiscsi_ep->ep_cid == 0xFFFF) {
1119                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1120                             "BS_%d : No free cid available\n");
1121                 return ret;
1122         }
1123
1124         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1125                     "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1126                     beiscsi_ep->ep_cid);
1127
1128         phba->ep_array[BE_GET_CRI_FROM_CID
1129                        (beiscsi_ep->ep_cid)] = ep;
1130
1131         beiscsi_ep->cid_vld = 0;
1132         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1133                                 sizeof(struct tcp_connect_and_offload_in),
1134                                 &nonemb_cmd.dma);
1135         if (nonemb_cmd.va == NULL) {
1136
1137                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1138                             "BS_%d : Failed to allocate memory for"
1139                             " mgmt_open_connection\n");
1140
1141                 beiscsi_free_ep(beiscsi_ep);
1142                 return -ENOMEM;
1143         }
1144         nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in);
1145         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1146         tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1147         if (tag <= 0) {
1148                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1149                             "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1150                             beiscsi_ep->ep_cid);
1151
1152                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1153                                     nonemb_cmd.va, nonemb_cmd.dma);
1154                 beiscsi_free_ep(beiscsi_ep);
1155                 return -EAGAIN;
1156         }
1157
1158         ret = beiscsi_mccq_compl(phba, tag, NULL, nonemb_cmd.va);
1159         if (ret) {
1160                 beiscsi_log(phba, KERN_ERR,
1161                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1162                             "BS_%d : mgmt_open_connection Failed");
1163
1164                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1165                             nonemb_cmd.va, nonemb_cmd.dma);
1166                 beiscsi_free_ep(beiscsi_ep);
1167                 return -EBUSY;
1168         }
1169
1170         ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1171         beiscsi_ep = ep->dd_data;
1172         beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1173         beiscsi_ep->cid_vld = 1;
1174         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1175                     "BS_%d : mgmt_open_connection Success\n");
1176
1177         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1178                             nonemb_cmd.va, nonemb_cmd.dma);
1179         return 0;
1180 }
1181
1182 /**
1183  * beiscsi_ep_connect - Ask chip to create TCP Conn
1184  * @scsi_host: Pointer to scsi_host structure
1185  * @dst_addr: The IP address of Target
1186  * @non_blocking: blocking or non-blocking call
1187  *
1188  * This routines first asks chip to create a connection and then allocates an EP
1189  */
1190 struct iscsi_endpoint *
1191 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1192                    int non_blocking)
1193 {
1194         struct beiscsi_hba *phba;
1195         struct beiscsi_endpoint *beiscsi_ep;
1196         struct iscsi_endpoint *ep;
1197         int ret;
1198
1199         if (shost)
1200                 phba = iscsi_host_priv(shost);
1201         else {
1202                 ret = -ENXIO;
1203                 printk(KERN_ERR
1204                        "beiscsi_ep_connect shost is NULL\n");
1205                 return ERR_PTR(ret);
1206         }
1207
1208         if (beiscsi_error(phba)) {
1209                 ret = -EIO;
1210                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1211                             "BS_%d : The FW state Not Stable!!!\n");
1212                 return ERR_PTR(ret);
1213         }
1214
1215         if (phba->state & BE_ADAPTER_PCI_ERR) {
1216                 ret = -EBUSY;
1217                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1218                             "BS_%d : In PCI_ERROR Recovery\n");
1219                 return ERR_PTR(ret);
1220         } else if (phba->state & BE_ADAPTER_LINK_DOWN) {
1221                 ret = -EBUSY;
1222                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1223                             "BS_%d : The Adapter Port state is Down!!!\n");
1224                 return ERR_PTR(ret);
1225         }
1226
1227         ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1228         if (!ep) {
1229                 ret = -ENOMEM;
1230                 return ERR_PTR(ret);
1231         }
1232
1233         beiscsi_ep = ep->dd_data;
1234         beiscsi_ep->phba = phba;
1235         beiscsi_ep->openiscsi_ep = ep;
1236         ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1237         if (ret) {
1238                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1239                             "BS_%d : Failed in beiscsi_open_conn\n");
1240                 goto free_ep;
1241         }
1242
1243         return ep;
1244
1245 free_ep:
1246         iscsi_destroy_endpoint(ep);
1247         return ERR_PTR(ret);
1248 }
1249
1250 /**
1251  * beiscsi_ep_poll - Poll to see if connection is established
1252  * @ep: endpoint to be used
1253  * @timeout_ms: timeout specified in millisecs
1254  *
1255  * Poll to see if TCP connection established
1256  */
1257 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1258 {
1259         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1260
1261         beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1262                     "BS_%d : In  beiscsi_ep_poll\n");
1263
1264         if (beiscsi_ep->cid_vld == 1)
1265                 return 1;
1266         else
1267                 return 0;
1268 }
1269
1270 /**
1271  * beiscsi_close_conn - Upload the  connection
1272  * @ep: The iscsi endpoint
1273  * @flag: The type of connection closure
1274  */
1275 static int beiscsi_close_conn(struct  beiscsi_endpoint *beiscsi_ep, int flag)
1276 {
1277         int ret = 0;
1278         unsigned int tag;
1279         struct beiscsi_hba *phba = beiscsi_ep->phba;
1280
1281         tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1282         if (!tag) {
1283                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1284                             "BS_%d : upload failed for cid 0x%x\n",
1285                             beiscsi_ep->ep_cid);
1286
1287                 ret = -EAGAIN;
1288         }
1289
1290         ret = beiscsi_mccq_compl(phba, tag, NULL, NULL);
1291         return ret;
1292 }
1293
1294 /**
1295  * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1296  * @phba: The phba instance
1297  * @cid: The cid to free
1298  */
1299 static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1300                                       unsigned int cid)
1301 {
1302         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1303
1304         if (phba->conn_table[cri_index])
1305                 phba->conn_table[cri_index] = NULL;
1306         else {
1307                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1308                             "BS_%d : Connection table Not occupied.\n");
1309                 return -EINVAL;
1310         }
1311         return 0;
1312 }
1313
1314 /**
1315  * beiscsi_ep_disconnect - Tears down the TCP connection
1316  * @ep: endpoint to be used
1317  *
1318  * Tears down the TCP connection
1319  */
1320 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1321 {
1322         struct beiscsi_conn *beiscsi_conn;
1323         struct beiscsi_endpoint *beiscsi_ep;
1324         struct beiscsi_hba *phba;
1325         unsigned int tag;
1326         uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1327         unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1328
1329         beiscsi_ep = ep->dd_data;
1330         phba = beiscsi_ep->phba;
1331         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1332                     "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1333                     beiscsi_ep->ep_cid);
1334
1335         if (beiscsi_ep->conn) {
1336                 beiscsi_conn = beiscsi_ep->conn;
1337                 iscsi_suspend_queue(beiscsi_conn->conn);
1338                 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1339                 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1340         } else {
1341                 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1342                 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1343         }
1344
1345         if (phba->state & BE_ADAPTER_PCI_ERR) {
1346                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1347                             "BS_%d : PCI_ERROR Recovery\n");
1348                 goto free_ep;
1349         }
1350
1351         tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1352                                           beiscsi_ep->ep_cid,
1353                                           mgmt_invalidate_flag,
1354                                           savecfg_flag);
1355         if (!tag) {
1356                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1357                             "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1358                             beiscsi_ep->ep_cid);
1359         }
1360
1361         beiscsi_mccq_compl(phba, tag, NULL, NULL);
1362         beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1363 free_ep:
1364         beiscsi_free_ep(beiscsi_ep);
1365         beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1366         iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1367 }
1368
1369 umode_t be2iscsi_attr_is_visible(int param_type, int param)
1370 {
1371         switch (param_type) {
1372         case ISCSI_NET_PARAM:
1373                 switch (param) {
1374                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1375                 case ISCSI_NET_PARAM_IPV4_ADDR:
1376                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1377                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1378                 case ISCSI_NET_PARAM_IPV4_GW:
1379                 case ISCSI_NET_PARAM_IPV6_ADDR:
1380                 case ISCSI_NET_PARAM_VLAN_ID:
1381                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1382                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1383                         return S_IRUGO;
1384                 default:
1385                         return 0;
1386                 }
1387         case ISCSI_HOST_PARAM:
1388                 switch (param) {
1389                 case ISCSI_HOST_PARAM_HWADDRESS:
1390                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1391                 case ISCSI_HOST_PARAM_PORT_STATE:
1392                 case ISCSI_HOST_PARAM_PORT_SPEED:
1393                         return S_IRUGO;
1394                 default:
1395                         return 0;
1396                 }
1397         case ISCSI_PARAM:
1398                 switch (param) {
1399                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1400                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1401                 case ISCSI_PARAM_HDRDGST_EN:
1402                 case ISCSI_PARAM_DATADGST_EN:
1403                 case ISCSI_PARAM_CONN_ADDRESS:
1404                 case ISCSI_PARAM_CONN_PORT:
1405                 case ISCSI_PARAM_EXP_STATSN:
1406                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1407                 case ISCSI_PARAM_PERSISTENT_PORT:
1408                 case ISCSI_PARAM_PING_TMO:
1409                 case ISCSI_PARAM_RECV_TMO:
1410                 case ISCSI_PARAM_INITIAL_R2T_EN:
1411                 case ISCSI_PARAM_MAX_R2T:
1412                 case ISCSI_PARAM_IMM_DATA_EN:
1413                 case ISCSI_PARAM_FIRST_BURST:
1414                 case ISCSI_PARAM_MAX_BURST:
1415                 case ISCSI_PARAM_PDU_INORDER_EN:
1416                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1417                 case ISCSI_PARAM_ERL:
1418                 case ISCSI_PARAM_TARGET_NAME:
1419                 case ISCSI_PARAM_TPGT:
1420                 case ISCSI_PARAM_USERNAME:
1421                 case ISCSI_PARAM_PASSWORD:
1422                 case ISCSI_PARAM_USERNAME_IN:
1423                 case ISCSI_PARAM_PASSWORD_IN:
1424                 case ISCSI_PARAM_FAST_ABORT:
1425                 case ISCSI_PARAM_ABORT_TMO:
1426                 case ISCSI_PARAM_LU_RESET_TMO:
1427                 case ISCSI_PARAM_IFACE_NAME:
1428                 case ISCSI_PARAM_INITIATOR_NAME:
1429                         return S_IRUGO;
1430                 default:
1431                         return 0;
1432                 }
1433         }
1434
1435         return 0;
1436 }